Those are fantastic! I really love the desert one, because I love capture point battles. The Castle is very well designed, but the terrain looks a little too empty. Maybe it would be better to have the castle in the middle, surrounded by forest. That way units not yet attacking the castle can at least have some cover, and also all of the walls (including that beautiful curved tower) can be attacked. Then you can throw in forest elements, like a larger-than-average tree that is conveniently located right up against the castle wall. The desert ruins are awesome, I personally wouldn't change a thing!